US20040257796A1 - Backlight system with exchangeable light sources and liquid crystal display using the same - Google Patents

Backlight system with exchangeable light sources and liquid crystal display using the same Download PDF

Info

Publication number
US20040257796A1
US20040257796A1 US10/871,142 US87114204A US2004257796A1 US 20040257796 A1 US20040257796 A1 US 20040257796A1 US 87114204 A US87114204 A US 87114204A US 2004257796 A1 US2004257796 A1 US 2004257796A1
Authority
US
United States
Prior art keywords
backlight system
bracket
emitting portion
light emitting
liquid crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US10/871,142
Other versions
US7159996B2 (en
Inventor
Chung-Sung Huang
Sheng-Ming Wen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innocom Technology Shenzhen Co Ltd
Innolux Corp
Original Assignee
Innolux Display Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innolux Display Corp filed Critical Innolux Display Corp
Assigned to INNOLUX DISPLAY CORP. reassignment INNOLUX DISPLAY CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, CHUNG-SUNG, WEN, SHENG-MING
Publication of US20040257796A1 publication Critical patent/US20040257796A1/en
Assigned to INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., INNOLUX DISPLAY CORP. reassignment INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INNOLUX DISPLAY CORP.
Application granted granted Critical
Publication of US7159996B2 publication Critical patent/US7159996B2/en
Assigned to CHIMEI INNOLUX CORPORATION reassignment CHIMEI INNOLUX CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INNOLUX DISPLAY CORPORATION
Assigned to Innolux Corporation reassignment Innolux Corporation CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CHIMEI INNOLUX CORPORATION
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/009—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps the support means engaging the vessel of the source
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/68—Green display, e.g. recycling, reduction of harmful substances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • H01R33/0809—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp having contacts on one side only

Definitions

  • the present invention relates to an illumination device to be used as a surface light source having uniform brightness; for example, as backlight for a liquid crystal display.
  • a typical LCD device includes a liquid crystal display panel, and a backlight system mounted under the liquid crystal display panel for supplying light beams thereto.
  • the backlight system is generally into one of two types—an upright type or an edge-light type—according to the position in which a lamp is installed in a backlight unit of the backlight system.
  • the lamp In the case of an upright type backlight system, the lamp is installed at a rear portion of the liquid crystal display panel. A light spreading plate and a light reflection plate are installed at front and rear portions of the lamp respectively, so that light beams are directly output onto a liquid crystal display panel.
  • U.S. Pat. No. 6,330,150 issued to Samsung Electronics Co., Ltd. on Dec. 11, 2001 discloses a liquid crystal display module 100 using an upright type backlight system.
  • the liquid crystal display module 100 includes a liquid crystal display panel 110 having a plurality of lamps 130 engaged therein.
  • the liquid crystal display panel 110 is mounted in a panel bracket 120 .
  • the bracket 120 is used to secure a frame of the liquid crystal display panel 110 , and the lamp 130 is exchanged by opening and closing a cover (not labeled) of the bracket 120 .
  • the liquid crystal display panel 110 includes an upper surface 111 , in which a plurality of rectangular holes 112 is defined. Each lamp 130 is engaged in a corresponding rectangular hole 112 .
  • Each lamp 130 includes a hexagonal head portion (not labeled), a luminous body (not labeled) extending from the head portion, and a rubber plate 131 attached on a lateral surface of the head portion.
  • the rubber plate 131 has a predetermined elasticity.
  • the rubber plate 131 attached at the head portion is compressed and released from the hole 112 .
  • the lamp 130 is then slid out from the liquid crystal panel 110 .
  • each lamp 130 is engaged in a corresponding rectangular hole 112 of the liquid crystal display panel 110 .
  • the lamp 130 is liable to abrade an edge of the liquid crystal display panel 110 at the hole 112 and thereby sustain damage.
  • An object of the present invention is to provide a backlight system that is capable of having light sources thereof easily and safely exchanged.
  • a backlight system in accordance with the present invention includes a light source, defining a light emitting portion and a wire; and a bracket includes a fastening means which holds the light emitting portion thereby mounting the light source on the bracket, the wire being electrically connected with the bracket.
  • FIG. 1 is an exploded, isometric view of a backlight system in accordance with a preferred embodiment of the present invention, but showing only one light source thereof;
  • FIG. 2 is an assembled view of the backlight system of FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2;
  • FIG. 4 is a cross-sectional view of part of a backlight system in accordance with an alternative embodiment of the present invention.
  • FIG. 5 is a partially cut-away, isometric view of a liquid crystal display using the backlight system of FIG. 2;
  • FIG. 6 is an exploded, isometric view of a conventional backlight system, but showing only one light source thereof;
  • FIG. 7 is an enlarged view of a circled portion VII of FIG. 6.
  • a backlight system 10 includes a bracket 20 and a plurality of linear light sources 30 .
  • the linear light sources 30 are CCFLs (cold cathode fluorescent lamps), each of which has a diameter of about 2 ⁇ 3 mm.
  • Each CCFL 30 includes a light emitting portion 31 , and a pair of wires 32 protruding from opposite ends of the emitting portion 31 respectively.
  • the bracket 20 includes a bottom plate 21 , and four side plates 22 extending from four edges of the bottom plate 21 respectively.
  • a plurality of elastic fixers 23 and fasteners 24 is disposed on the bottom plate 21 .
  • the fixers 23 line two opposite long sides of the bracket 20 .
  • the fasteners 24 are aligned along a middle of the bracket 20 , between corresponding fixers 23 .
  • the fixers 23 can be made of silicon rubber or another elastic material with good heat-resistant [and heat transmission] characteristics.
  • Each fixer 23 defines a groove 231 .
  • the fasteners 24 can be made of transparent elastic material.
  • Each fastener 24 comprises an upper fastening portion 241 .
  • each CCFL 30 is pressed into the grooves 231 of two corresponding fixers 23 and the fastening portion 241 of a corresponding fastener 24 .
  • the grooves 231 of the corresponding fixers 23 have a diameter matching that of the wires 32 of the CCFL 30 .
  • the fastening portion 241 of the fastener 24 has a diameter matching that of the light emitting portion 31 of the CCFL 30 . Therefore, the grooves 231 of the fixers 23 and the fastening portion 241 of the fastener 24 cooperative tightly fasten the CCFL 30 in the bracket 20 .
  • the wires 32 are electrically connected to electronic means (not shown) provided in the bracket 20 . Then external power can be supplied through the electronic means so that the light emitting portions 31 of the CCFLs 30 emit light beams.
  • a reflective film 25 can be coated on the bottom plate 21 and side plates 22 .
  • the reflective film 25 can be made of an alloy or metallic material with high reflectivity.
  • FIG. 4 is a cross-sectional view of part of a backlight system according to the alternative embodiment of the present invention. Unlike in the preferred embodiment, the light emitting portion 31 of each CCFL 30 is covered with a protective layer 311 .
  • the protective layer 311 can be made from stiff transparent material, and is used to protect the CCFL 30 from damage during transportation and during engagement of the CCFL 30 in the bracket 20 .
  • FIG. 5 is a partially cut-away, isometric view of a liquid crystal display 90 using the backlight system 10 of the present invention.
  • the liquid crystal display 90 includes a diffusion sheet 91 and a liquid crystal display panel 92 stacked in that order on the backlight system 10 .
  • light beams emitted from the backlight system 10 pass through the diffusion sheet 91 to illuminate the liquid crystal panel 92 .
  • the fixers 23 and the fastener 24 of the backlight system 10 , 11 stably fix the light sources 30 in the bracket 20 .

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A backlight system (10) includes a light source (30) having a light emitting portion (31) and a wire (32); and a bracket (20) having a plurality of fastener (24) which holds the light emitting portion thereby mounting the light source on the bracket, the wire are electrically connected with the bracket. The backlight system can stably fix the light sources in the bracket, and it is convenient and safe to exchange the light sources.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to an illumination device to be used as a surface light source having uniform brightness; for example, as backlight for a liquid crystal display. [0002]
  • 2. Prior Art [0003]
  • A typical LCD device includes a liquid crystal display panel, and a backlight system mounted under the liquid crystal display panel for supplying light beams thereto. The backlight system is generally into one of two types—an upright type or an edge-light type—according to the position in which a lamp is installed in a backlight unit of the backlight system. [0004]
  • In the case of an upright type backlight system, the lamp is installed at a rear portion of the liquid crystal display panel. A light spreading plate and a light reflection plate are installed at front and rear portions of the lamp respectively, so that light beams are directly output onto a liquid crystal display panel. [0005]
  • Referring to FIG. 6, U.S. Pat. No. 6,330,150 issued to Samsung Electronics Co., Ltd. on Dec. 11, 2001 discloses a liquid [0006] crystal display module 100 using an upright type backlight system. The liquid crystal display module 100 includes a liquid crystal display panel 110 having a plurality of lamps 130 engaged therein. The liquid crystal display panel 110 is mounted in a panel bracket 120.
  • The [0007] bracket 120 is used to secure a frame of the liquid crystal display panel 110, and the lamp 130 is exchanged by opening and closing a cover (not labeled) of the bracket 120.
  • The liquid [0008] crystal display panel 110 includes an upper surface 111, in which a plurality of rectangular holes 112 is defined. Each lamp 130 is engaged in a corresponding rectangular hole 112.
  • Each [0009] lamp 130 includes a hexagonal head portion (not labeled), a luminous body (not labeled) extending from the head portion, and a rubber plate 131 attached on a lateral surface of the head portion. The rubber plate 131 has a predetermined elasticity. When the lamp 130 is inserted into the rectangular hole 112 of the liquid crystal display panel 70, the rubber plate 131 is elastically compressed and received in the hole 112. Once the lamp 130 has been completely inserted into the hole 112, pressure on the rubber plate 131 is released. The rubber plate 131 expands so that it is resiliently engaged in the hole 112. The lamp 130 is thus fixed at the hole 112 and secured in the liquid crystal display panel 110.
  • When exchanging the [0010] lamp 130, the rubber plate 131 attached at the head portion is compressed and released from the hole 112. The lamp 130 is then slid out from the liquid crystal panel 110.
  • However, the liquid [0011] crystal display module 100 has certain disadvantages. First, each lamp 130 is engaged in a corresponding rectangular hole 112 of the liquid crystal display panel 110. During engagement and removal of the lamp 130, the lamp 130 is liable to abrade an edge of the liquid crystal display panel 110 at the hole 112 and thereby sustain damage. Second, only one rubber plate 131 is used to fix each lamp 130 in the liquid crystal panel 110. This engagement may not be secure, particularly if the LCD module 100 is subjected to vibration or shock during use or transportation.
  • Therefore, it is desirable to provide a backlight system which overcomes the above-described disadvantages of conventional backlight systems. [0012]
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide a backlight system that is capable of having light sources thereof easily and safely exchanged. [0013]
  • In order to achieve the above-mentioned object, a backlight system in accordance with the present invention includes a light source, defining a light emitting portion and a wire; and a bracket includes a fastening means which holds the light emitting portion thereby mounting the light source on the bracket, the wire being electrically connected with the bracket. [0014]
  • Other objects, advantages, and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:[0015]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded, isometric view of a backlight system in accordance with a preferred embodiment of the present invention, but showing only one light source thereof; [0016]
  • FIG. 2 is an assembled view of the backlight system of FIG. 1; [0017]
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2; [0018]
  • FIG. 4 is a cross-sectional view of part of a backlight system in accordance with an alternative embodiment of the present invention; [0019]
  • FIG. 5 is a partially cut-away, isometric view of a liquid crystal display using the backlight system of FIG. 2; [0020]
  • FIG. 6 is an exploded, isometric view of a conventional backlight system, but showing only one light source thereof; and [0021]
  • FIG. 7 is an enlarged view of a circled portion VII of FIG. 6.[0022]
    • DETAILED DESCRIPTION OF THE PRESENT INVENTION
  • Referring to FIGS. 1-3, a [0023] backlight system 10 according to the preferred embodiment of the present invention includes a bracket 20 and a plurality of linear light sources 30. In the preferred embodiment, the linear light sources 30 are CCFLs (cold cathode fluorescent lamps), each of which has a diameter of about 2˜3 mm.
  • Each [0024] CCFL 30 includes a light emitting portion 31, and a pair of wires 32 protruding from opposite ends of the emitting portion 31 respectively.
  • The [0025] bracket 20 includes a bottom plate 21, and four side plates 22 extending from four edges of the bottom plate 21 respectively. A plurality of elastic fixers 23 and fasteners 24 is disposed on the bottom plate 21. The fixers 23 line two opposite long sides of the bracket 20. The fasteners 24 are aligned along a middle of the bracket 20, between corresponding fixers 23. The fixers 23 can be made of silicon rubber or another elastic material with good heat-resistant [and heat transmission] characteristics. Each fixer 23 defines a groove 231. The fasteners 24 can be made of transparent elastic material. Each fastener 24 comprises an upper fastening portion 241.
  • In assembly, each [0026] CCFL 30 is pressed into the grooves 231 of two corresponding fixers 23 and the fastening portion 241 of a corresponding fastener 24. The grooves 231 of the corresponding fixers 23 have a diameter matching that of the wires 32 of the CCFL 30. The fastening portion 241 of the fastener 24 has a diameter matching that of the light emitting portion 31 of the CCFL 30. Therefore, the grooves 231 of the fixers 23 and the fastening portion 241 of the fastener 24 cooperative tightly fasten the CCFL 30 in the bracket 20.
  • When the [0027] CCFLs 30 are engaged in the bracket 20, the wires 32 are electrically connected to electronic means (not shown) provided in the bracket 20. Then external power can be supplied through the electronic means so that the light emitting portions 31 of the CCFLs 30 emit light beams. For improving the brightness of the backlight system 10, a reflective film 25 can be coated on the bottom plate 21 and side plates 22. The reflective film 25 can be made of an alloy or metallic material with high reflectivity.
  • When exchanging one of the [0028] CCFLs 30, the wires 32 and the light emitting portion 31 are removed from the fixers 23 and the fastener 24 respectively. Therefore, not only are the CCFLs 30 stably fixable in the bracket 20, they are also conveniently exchanged.
  • FIG. 4 is a cross-sectional view of part of a backlight system according to the alternative embodiment of the present invention. Unlike in the preferred embodiment, the [0029] light emitting portion 31 of each CCFL 30 is covered with a protective layer 311. The protective layer 311 can be made from stiff transparent material, and is used to protect the CCFL 30 from damage during transportation and during engagement of the CCFL 30 in the bracket 20.
  • FIG. 5 is a partially cut-away, isometric view of a [0030] liquid crystal display 90 using the backlight system 10 of the present invention. The liquid crystal display 90 includes a diffusion sheet 91 and a liquid crystal display panel 92 stacked in that order on the backlight system 10. In operation, light beams emitted from the backlight system 10 pass through the diffusion sheet 91 to illuminate the liquid crystal panel 92.
  • In summary, the main advantages of the present invention include following. First, the [0031] fixers 23 and the fastener 24 of the backlight system 10, 11 stably fix the light sources 30 in the bracket 20. Second, it is convenient and safe to exchange the light sources 30.
  • It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. [0032]

Claims (19)

What is claimed is:
1. A backlight system, comprising:
a light source, defining a light emitting portion and a wire;
a bracket comprising a fastening means which holds the light emitting portion thereby mounting the light source on the bracket, the wire being electrically connected with the bracket.
2. The backlight system as claimed in claim 1, wherein the light source defines two wires at opposite ends of the light emitting portion.
3. The backlight system as claimed in claim 1, wherein the fastening means is made of transparent elastic material.
4. The backlight system as claimed in claim 1, wherein the bracket further comprises a plurality of fixers.
5. The backlight system as claimed in claim 4, wherein the fixers are made of silicon rubber.
6. The backlight system as claimed in claim 4, wherein the fixers are made of elastic material with good heat-resistant characteristics.
7. The backlight system as claimed in claim 1, wherein the bracket further comprises a bottom plate.
8. The backlight system as claimed in claim 7, wherein the bottom plate has a reflective film provided thereon.
9. The backlight system as claimed in claim 8, wherein the reflective film is made of an alloy with high reflectivity.
10. The backlight system as claimed in claim 8, wherein the reflective film is made of metal.
11. The backlight system as claimed in claim 1, wherein the light emitting portion is covered by a protective layer.
12. The backlight system as claimed in claim 11, wherein the protective layer is made of stiff transparent material.
13. A liquid crystal display, comprising:
a liquid display panel;
a diffusion sheet underlying the liquid display panel; and
a backlight system underlying the diffusion sheet, the backlight system including:
a light source, defining a light emitting portion and a wire; and
a bracket including a fastening means which holds the light emitting portion thereby mounting the light source on the bracket, the wire being electrically connected with the bracket.
14. The liquid crystal display as claimed in claim 13, wherein the light source defines two wires at opposite ends of the light emitting portion.
15. The liquid crystal display as claimed in claim 13, wherein the bracket further comprises a plurality of fixers.
16. The liquid crystal display as claimed in claim 13, wherein the bracket further comprises a bottom plate.
17. The liquid crystal display as claimed in claim 16, wherein the bottom plate has a reflective film provided thereon.
18. The liquid crystal display as claimed in claim 13, wherein the light emitting portion is covered by a protective layer.
19. A backlight system, comprising:
a light source, defining a light emitting portion and a wire at one end of the light emitting portion; and
a bracket comprising a fastening means which holds the light emitting portion, and a fixer spaced from the fastening means which holds the wire; wherein
the light source is mounted to the bracket in a direction perpendicular to ax axis defined by said light emitting portion.
US10/871,142 2003-06-18 2004-06-18 Backlight system with exchangeable light sources and liquid crystal display using the same Expired - Fee Related US7159996B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW92116595 2003-06-18
TW092116595A TWI255945B (en) 2003-06-18 2003-06-18 Backlight system and liquid crystal display device using the same

Publications (2)

Publication Number Publication Date
US20040257796A1 true US20040257796A1 (en) 2004-12-23
US7159996B2 US7159996B2 (en) 2007-01-09

Family

ID=33516557

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/871,142 Expired - Fee Related US7159996B2 (en) 2003-06-18 2004-06-18 Backlight system with exchangeable light sources and liquid crystal display using the same

Country Status (2)

Country Link
US (1) US7159996B2 (en)
TW (1) TWI255945B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060033412A1 (en) * 2004-08-10 2006-02-16 Hea-Chun Lee Backlight assembly and liquid crystal display apparatus
US20060139919A1 (en) * 2004-12-27 2006-06-29 Seong-Sik Choi Receiving container, backlight assembly having the receiving container, and display device having the backlight assembly
US20070046217A1 (en) * 2005-08-31 2007-03-01 O2Micro, Inc. Open lamp detection in an EEFL backlight system
WO2012145934A1 (en) * 2011-04-29 2012-11-01 深圳市华星光电技术有限公司 Backlight module and display apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI292502B (en) * 2004-09-30 2008-01-11 Hannstar Display Corp Replaceable lamp set and direct backlight system fand lcd combination thereof
JP4652836B2 (en) * 2005-02-03 2011-03-16 キヤノン株式会社 Illumination device and photographing device
KR101257512B1 (en) * 2005-08-29 2013-04-23 니혼앗짜쿠단시세이소 가부시키가이샤 Fluorescent tube attaching structure
KR101193686B1 (en) * 2005-08-29 2012-10-22 니혼앗짜쿠단시세이소 가부시키가이샤 Electrical connector and liquid crystal display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186537A (en) * 1987-12-07 1993-02-16 Dai-Ichi Seiko Co., Ltd. Illumination device
US5537296A (en) * 1993-11-05 1996-07-16 Kimura; Yasuhiro Backlight for liquid crystal display and liquid crystal display
US5558420A (en) * 1993-11-12 1996-09-24 Stanley Electric Co., Ltd. Flat lighting device
US6330150B1 (en) * 1999-11-02 2001-12-11 Samsung Electronics Co., Ltd. System for exchanging lamp of LCD
US6664954B1 (en) * 1998-11-05 2003-12-16 Canon Kabushiki Kaisha Coordinate input indicator
US6867825B2 (en) * 2001-04-17 2005-03-15 Nec Lcd Technologies, Ltd. Liquid crystal display device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100873070B1 (en) * 2002-06-05 2008-12-09 삼성전자주식회사 Back light assembly and liquid crystal display device using the same
TW200426412A (en) * 2003-05-29 2004-12-01 Au Optronics Corp Vertical type backlight unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186537A (en) * 1987-12-07 1993-02-16 Dai-Ichi Seiko Co., Ltd. Illumination device
US5537296A (en) * 1993-11-05 1996-07-16 Kimura; Yasuhiro Backlight for liquid crystal display and liquid crystal display
US5558420A (en) * 1993-11-12 1996-09-24 Stanley Electric Co., Ltd. Flat lighting device
US6664954B1 (en) * 1998-11-05 2003-12-16 Canon Kabushiki Kaisha Coordinate input indicator
US6330150B1 (en) * 1999-11-02 2001-12-11 Samsung Electronics Co., Ltd. System for exchanging lamp of LCD
US6867825B2 (en) * 2001-04-17 2005-03-15 Nec Lcd Technologies, Ltd. Liquid crystal display device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060033412A1 (en) * 2004-08-10 2006-02-16 Hea-Chun Lee Backlight assembly and liquid crystal display apparatus
US7453192B2 (en) * 2004-08-10 2008-11-18 Samsung Electronics Co., Ltd. Backlight assembly and liquid crystal display apparatus
US20060139919A1 (en) * 2004-12-27 2006-06-29 Seong-Sik Choi Receiving container, backlight assembly having the receiving container, and display device having the backlight assembly
US20070046217A1 (en) * 2005-08-31 2007-03-01 O2Micro, Inc. Open lamp detection in an EEFL backlight system
US7253569B2 (en) * 2005-08-31 2007-08-07 02Micro International Limited Open lamp detection in an EEFL backlight system
WO2012145934A1 (en) * 2011-04-29 2012-11-01 深圳市华星光电技术有限公司 Backlight module and display apparatus
US8641216B2 (en) 2011-04-29 2014-02-04 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and display apparatus

Also Published As

Publication number Publication date
US7159996B2 (en) 2007-01-09
TW200500734A (en) 2005-01-01
TWI255945B (en) 2006-06-01

Similar Documents

Publication Publication Date Title
US6930734B2 (en) Liquid crystal display module and liquid crystal display apparatus having the same
US7604389B2 (en) Surface light source device
KR100997139B1 (en) Backlight unit and liquid crystal display having the same
EP2202456B1 (en) Backlight unit and liquid crystal display having the same
US7413324B2 (en) Backlight module having supporting posts and bumpy reflective plate
US20060114689A1 (en) Backlight module and liquid crystal display device using the same
KR20090060748A (en) Display apparatus, upper container, and method of assembling the display apparatus
US20060221632A1 (en) Signboard using LED light source
US7339637B2 (en) Liquid crystal display light source device
US7665878B2 (en) Backlight module with shock-protection elastic member and liquid crystal display using same
US7722229B2 (en) Frame design and backlight system using the same
US20060120112A1 (en) Backlight module and light guide plate with integrated frame
US7159996B2 (en) Backlight system with exchangeable light sources and liquid crystal display using the same
KR101338020B1 (en) Liquid crystal display device
US7463316B2 (en) Backlight module with light source reflector having wider top plate and liquid crystal display with same
KR20080070134A (en) Liquid crystal display device
JPH08179321A (en) Liquid crystal display device
KR20070112503A (en) Liquid crystal display device
US7604373B2 (en) Holding frame and backlight module using the same
KR101260015B1 (en) Backlight assembly and liquid crystal display comprising the same
US7416325B2 (en) Frame for fixing optical sheet and backlight module using the same
US7030943B2 (en) Liquid crystal display and back light module thereof
US20050190317A1 (en) Liquid crystal display device and backlight module thereof and light assembly of backlight module
US20070253186A1 (en) Backlight module and liquid crystal display incorporating same
KR101383998B1 (en) Fixing member for light source, back light assembly having the same, and display device having the back light assembly

Legal Events

Date Code Title Description
AS Assignment

Owner name: INNOLUX DISPLAY CORP., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, CHUNG-SUNG;WEN, SHENG-MING;REEL/FRAME:015500/0644

Effective date: 20040605

AS Assignment

Owner name: INNOLUX DISPLAY CORP., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INNOLUX DISPLAY CORP.;REEL/FRAME:018581/0428

Effective date: 20061127

Owner name: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INNOLUX DISPLAY CORP.;REEL/FRAME:018581/0428

Effective date: 20061127

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: INNOLUX CORPORATION, TAIWAN

Free format text: CHANGE OF NAME;ASSIGNOR:CHIMEI INNOLUX CORPORATION;REEL/FRAME:032672/0897

Effective date: 20121219

Owner name: CHIMEI INNOLUX CORPORATION, TAIWAN

Free format text: CHANGE OF NAME;ASSIGNOR:INNOLUX DISPLAY CORPORATION;REEL/FRAME:032672/0877

Effective date: 20100330

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20190109